summitlt said:
SYEs on comanches are needed with a lot more lift, MJs have long driveshafts compared to the XJ
I disagree with this statement. I have an MJ with about 8"es of lift. The drive-shaft is much longer than the XJ, so your not as likely to need an SYE at all. I don't have one with 8"es of lift on the MJ, and my XJ needed one after 4.5"es of lift.
I think for a trail beater, you can't go wrong with a spring over in the rear, and a leaf spring conversion in the front. I bought some Dana 44's from a Grand Wagoneer for 140 bucks (for both axles in a junk yard), threw some 5:13's, Front carrier (don't need one for the rear with a spool), Full Spool in the rear (long wheel base, hardly notice on the road), and a lock rite in the front. I bought some Warn lock-out hubs for $70, and 15 min later they were installed. I spent $1000 dollars on the XJ D-30 Warn hub conversion, and a couple of hours to install it. I have Rancho 9000 shocks, going high-steer (you'll want that ($500 bucks, and worth every penny), some 15x10's and 38.5x14.50 TSL SX's. With purchase price and all I have about $3500 bucks in it. That includes Cobra CB, JVC CD, and speakers. The bed was shortened about a foot, the wheel base is a long one, but I like it. With 38's, it's still low center of gravity, and fits in my 7 foot garage door bay. get the 4.0, later years are of course better. I have the auto, and love them. I even have working A/C, tilt wheel, and clean interior. I enjoy this truck alot more than the XJ, that had close to $25,000 into it. I have rattle can Rustoleum Tan paint and TJ flares.
Here's a pic to get the ideas going, it was not quite finished in this pic.